本地存储

				var Util = (function() {
					var prefix = 'king';
					var StorageGetter = function(key) {
						return localStorage.getItem(prefix + key);
					}
					var StorageSetter = function(key, val) {
						return localStorage.setItem(prefix + key, val);
					}

					return {
				
						StorageGetter : StorageGetter,
						StorageSetter : StorageSetter
					}
				})();